English verb conjugation
MUST SELECT

Regular verb: select - selected - selected

Affirmation

Simple form	V-ing form
I must select you must select she must select we must select you must select they must select	I must be selecting you must be selecting she must be selecting we must be selecting you must be selecting they must be selecting
Perfect	V-ing perfect
I must have selected you must have selected she must have selected we must have selected you must have selected they must have selected	I must have been selecting you must have been selecting she must have been selecting we must have been selecting you must have been selecting they must have been selecting

Negation

Simple form	V-ing form
I must not select you must not select she must not select we must not select you must not select they must not select	I must not be selecting you must not be selecting she must not be selecting we must not be selecting you must not be selecting they must not be selecting
Perfect	V-ing perfect
I must not have selected you must not have selected she must not have selected we must not have selected you must not have selected they must not have selected	I must not have been selecting you must not have been selecting she must not have been selecting we must not have been selecting you must not have been selecting they must not have been selecting

Interrogative form

Simple form	V-ing form
must I select? must you select? must she select? must we select? must you select? must they select?	must I be selecting? must you be selecting? must she be selecting? must we be selecting? must you be selecting? must they be selecting?
Perfect	V-ing perfect
must I have selected? must you have selected? must she have selected? must we have selected? must you have selected? must they have selected?	must I have been selecting? must you have been selecting? must she have been selecting? must we have been selecting? must you have been selecting? must they have been selecting?

Interro-negative form

Simple form	V-ing form
must I not select? must you not select? must she not select? must we not select? must you not select? must they not select?	must I not be selecting? must you not be selecting? must she not be selecting? must we not be selecting? must you not be selecting? must they not be selecting?
Perfect	V-ing perfect
must I not have selected? must you not have selected? must she not have selected? must we not have selected? must you not have selected? must they not have selected?	must I not have been selecting? must you not have been selecting? must she not have been selecting? must we not have been selecting? must you not have been selecting? must they not have been selecting?